Positive shuttle-motion for looms.



G. CROSSLAND.

POSITIVE SHUTTLE MOTION FOR LOOMS APPLICATION FILED MAR. 20. 19:1.

3 SHEETS-SHEET I.

G. CROSSLAND.

POSITIVE SHUTTLE MOTION FOR LOOMS.

APPLICATION FILED MAR. 20. I917.

Patented J une 4, 1918.

3 SHEETS- @HEET 2.

G. CROSSLAND...

POSITIVE SHUTTLE MOTION FOR LOOMS.

APPLICATION FILED MAR. 20. 19!].

. ,zfigflgg Patented June 4-, 1918 a SHEETS-SHEET a.

in mull-mull- IIIIIIII!!!I mmL- mmm' I I I III....-

lmlmnum ifwkyw Wmf i nfi a2 3 IIIIIIIII I l 1 I GEORGE CROSSLAND, OFWORCESTER, MASSACHUSETTS ASSIGNOR T0 CROMPTON & KNOWLES LOOM WORKS, OFWORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

POSITIVE SHUTTLE-MOTION FOR LOOMS.

Specification of Letters Patent.

Patented June 4, 1918..

Application filed March 20, 1917. Serial No. 156,178.

To all whom it may concern:

Be it known that I, GEORGE CRossLANn, a citizen of the United States,residing at Worcester, in the county of Worcester and State ofMassachusetts, have invented a new and useful Positive Shuttle-Motionfor Looms, of which the following is a specification. 1

This invention relates to a positive shuttle motion for looms of thetype in which the shuttle is passed through the shed by reciprocatingrods detachably and alternately engaging the shuttle.

In such looms, the shuttle is commonly pushed to the center of theloomby a reciprocating rod which engages the rear end of the shuttle andit is thereafter drawn along the remaining portion of its flight by asecond reciprocating rod. which engages the front end of the shuttle.

It is the object of my invention to pro- ,vide improved mechanism forreciprocating the said rods and particularly for giving the rods avariable speed motion gradually decreasing in velocity as the shuttleapproaches the boxes and as it approaches the center point of itsflight.

In its preferred form this mechanism comprises a crank shaft havingoppositely disposed crank pins and connections from said crank pins tothe reciprocating rods. I have herein shown the invention as applied toa loom using two shuttles, but it will be apparent that the invention isequally applicable to a loom using a single shuttle.

A further feature of my invention relates to means for alternatelydisengaging the reciprocating rods from the shuttles in a double shedloom.

My invention further relatesto certain arrangements and combinations ofparts which will be hereinafter described and more particularly pointedout inthe appended claims.

Apreferred form of my invention is shown in the drawings, in which-Figure 1 is a front elevation of proved shuttle motion; 1

Fig. 2 is a left-hand side elevation partly in section, taken along theline 2-2 in Fig. l, with certain parts omitted for the sake ofclearness; j i

Figs. 3 and 4 are a front elevation and P an ne r pe t vely of ne o hedevi s my im- Fig. 5 is an enlarged front elevation of a portion of theshuttle motion, and

Fig. 6 is a plan view of the parts shown in Fig. 5. i

Referring to Fig. 1, I have shown therein my invention as embodied in adouble shuttle loom. In this figure the upper shuttle boxes areindicated at 10 and 11 and the lower boxes at 12 and 13. The lay and theoperating mechanism therefor is omitted for the sake of clearness. Thereciprocating rods by which the shuttles are actuated are shown at 14c,15, 16, and 17. The rods 1 1 and 15 are clamped in a carrier 18 which ismounted to slide in fixed ways 19 (Fig. 2)

mounted on the frame of the loom. The

rods 16 and 17 are similarly secured in a carrier 20 slidable in ways onthe right-hand side of the loom.

The carriers 18 and 20 are connected by links 21 and 22 to levers 23 and24 mounted to swing respectively about fixed pivots 25 and26.l Thelevers 23 and 24; are connected by links 27 and 28 to oppositelydisposed crank pins 29 and 30 (Fig; 5), carried by a crank shaft 31rotatable in fixed bearings 32 and 33 (Fig. 6). The crank shaft 31 isintermittently rotated by dwell gearing com prising a mutilatedpinion 31 fixed to the shaft 31 and a mutilated gear 35 (Fig. 5) loosely mountedon a driven shaft 36..

Provision is made for securing the gear 35 to the shaft 36 in anydesired angular relation thereto, and for this purpose a toothed disk 37is keyed to the shaft 36, and a notchedplate 38 is detachably secured tothe gear 35. The plate 38 fits between lugs or projections formed on theweb of the gear 35, and when the plate 38 is in position betweensaidprojections the angular relation of the gear 35 and the plate 38 cannotbe changed. If it is desired to change this relation the plate 38 isremoved and is replaced after the angular relation of the parts has beenadjusted.

Bolts or screws 39 threaded into the gear 35 and extending through slotsin the toothed disk 37 provide means for firmly securing the gear 35 tothe disk 37 and shaft 36, which latter is continuously rotated from anyconvenient driving member,

In Figs. 3 and 1, have shown one form of mechanism for attaching thereciprocat ing rods 14:, 15, 16 and 17 to the shuttles. I have selectedfor illustration the attaching mechanism M the rod 1'1 and onFig. l Ihave indicated by brackets the location of the attaching mechanism 1 Mand M for the rods 15, 16 and 17 respectively.

The mechanism M comprises a head 10 formed on or secured to the rod 14;and having a lip or wing 11 iirojecting at an angle from the forward endthereof. The end of the head ,10 recessed at 12 to receive a notchedprojection 13 formed on the end of the shuttle. A locking lever 44 ispivoted at 4:5 011 the head 40, and a spring 46 forces the'lever intolocking position, in which position a lug 17 formed on the lever extendsthrough an opening {L8 in the side of the head 10 and locks theprojecting member d3 into the recess 4.2.

A releasing lever 50 is pivoted at 51 upon the head 41:0 and one portionof the lever engages the rear end 14: ofthe locking lever 44:. Theoppositeend of the lever 50 supports a plate 52 in position forengagement by the end of a releasing rod 53 (Figs. 2 and 4). When thusengaged, the lever 50 will move upon its pivot, carrying \vithitthe'lever 14 and withdrawing the projection 47 from the slot in theprojecting member 4:3, thus releasing the shuttle.

I will now describe the mechanism for actuating the releasing rod 53.Referring to i of a three-armed lever 55 mounted upon a fixed pivot 56.The rods 53 and 5a are slidable in fixed bearings 57 and 58 into and outof the path of movement of the releasing plates 52 carried thereciprocating rods14 and 15. The third arm of the lever v is connectedby a link 60 to a lever 61 mounted on a shaft 62 which is connected byan arm 620 and a link 63 to a lever 64 mounted on a fixed pivot 65, and:provided with a cam follower 66 through which the lever 64 is moved by aface cam 67. This cam is continuously rotated in any convenient way, andis providedwith a concentric portion 67 which temporarily retains therod 53 in operative position, and with a corresponding concentricportion 67 which retains the rod 5st in operative position.

Similar rods 70 and 71 are provided for releasing the shuttles on theright-hand side of the loom, and the shaft 62 is extended across theloom and provided with a second arm 72 connected by a link 73 to actuatethe rods/70 and 71. j

Having described the details of construction of my improved mechanism, Iwill briefly describe the operation thereof. Upon the rotation of thecrankshaft 31 the levers 23 and 24 will be drawn toward each other,simultaneously advancing the carriers 7 1.8 and 20, and thereciprocating rods nounted therein. Assuming that shuttles arepositioned in the boxes 10 and 13, the rods 1 k and 17 will be connectedthereto by their locking levers as and as the rods are advancing theshuttles will be pushed to their central positions. As they reach thispoint the releasing plates 52 will be engaged by the releasing rods 53and 71', and at the same time the attaching heads of the rods 15 and16will engage the projections on the forward ends of the shuttle, and willbe locked thereto. During this operation the crank shaft willhavemadeone half of a revolution.

During the second half of the revolution the levers 23 and 2 1 will bedrawn apart, reciprocating the carriers 18 and 20 in the oppositedirection, and thus drawing the shuttles out of the shed and into theopposite shuttle boxes. The cam 67 will then shift the three-arm lever55, withdrawing the releasing rods 53 and 71 and advancing the rods 54and 70 into position to release the shuttles at the center of their nextsucceeding flight.

The dwell gearing between the driven shaft 36 and the crank shaft 31permits the shuttles to remain in the shuttle boxes during the beatingup of the filling, and the crank motion brings the shuttles to acomplete stop both in the shuttle boxes and also in the center of theirflight. If it is necessary to change the timing of the shut tle flightwith relation to the other parts of the loom mechanism, this change canbe made by adjusting the gear 35 upon the shaft 36, using the adjustingmechanism shown in Fig.5 and previously described.

Having thus described my invention, it will be evident that changes andmodifications can be made therein by those skilled in the art withoutdeparting from the spirit and scope of my invention as setforth in theclaims, andI do not wish to be otherwise limited to the details hereindisclosed, but what I claim is i 1. A positive shuttle motion for loomscomprising rods mounted at opposite sides of the loom and adapted tobealte 'nately connected to the shuttle, and means to reciprocate saidrods simultaneously in opposite directions, said means comprising adriven shaft, a mutilated gear loose on said shaft, a pinionintermittently rotatable by said gear, crank pins rotatable by saidpinion, connections from said pin to said rods," and means to securesaid mutilatedgear to said driven shaft in adjusted angular position,said means comprising atoothed disktight on said shaft, a notched platedetachably 139 Secured in fixed position on said gear and effective toengage any desired portion of said toothed disk, and means to clamp saidgear to said disk.

2. A positive shuttle motion for looms comprising rods mounted in pairsat opposite sides of the loom, means to reciprocate said rodssimultaneously in opposite directions, means to attach said rods to theshuttles, and means to release the rods from the shuttles as theshuttles reach their central Gopies of this patent may be obtained forfive cents each, by addressing the position, said means comprisingreleasing rods mounted in pairs at each side of the loom and means toreciprocate said rods alternately, whereby the upper releasing rod ofone pair and the lower rod of the opposite pair will be simultaneouslyadvanced to operative position or retracted therefrom.

In testimony whereof I have hereunto aiiixed my signature.

GEORGE GROSSLAND.

Commissioner of Patents,

Washington, D. G.

